Kim and Khloe Kardashian have been parading a much smaller physique recently, sparking speculation about how they've achieved their hourglass figures.
The sisters are no strangers to working out and eating healthy, as they often detail on their social media.
Early morning gruelling gym sessions have become a way of life for the famous sisters.
They meet at 6am every day Monday to Friday - except for Wednesdays, when Khloe does cardio or Pilates on her own - and both crush one-hour sessions with their trainers.
Latest claims are that the famous pair have had their bum implants removed, which has produced a far less curvy appearance.
However, another claim rocking the sisters is that they have had an endoscopic sleeve surgery, which is rumoured to be the reason for their skinny appearance.
The Kardashians’ figures have been fascinating fans for years and have changed significantly during that time.
When the clan first appeared on Keeping Up With The Kardashians, fresh-faced with an average body size was how they could be described.
But over the years, and as their success grew, so too did their assets.
Although older sister Kourtney Kardashian has remained pretty much the same from the start, this could not be said about the other sisters Kim and Khloe.
Despite her surgery denials, Kim’s bum looked anything but natural when she famously broke the internet while posing nude for the cover of Paper Magazine in 2014.
Khloe, too, has never come out and admitted her increased bum size over the years, but fans who compared her behind to older photos are convinced she's had a helping hand.
But it would seem that today, big bums are out and a far smaller frame is in, which has been rumoured to have been achieved through surgery.
What is an endoscopic sleeve?
Endoscopic sleeve gastroplasty (ESG) is a type of weight-loss treatment.
It works by reducing the size of a person’s stomach.
It is performed using a camera inserted through the mouth to the stomach (endoscopy).
The results include rapid weight loss, which is possible due to a major reduction in food consumed.
A surgery blog first started fuelling rumours the pair have undergone this surgery.
The Instagram account SurgeonMadeCurves posted the claims alongside a recent photo of Kim looking ultra slim while on holiday.
They wrote: “I’m getting vibes that her and Khloe did the endoscopic sleeve but not sure.
“For those wondering, they cut your stomach like a mini sleeve but they go via your mouth/throat.”
Kim shocked fans in May 2022 when she dropped 16 pounds in three weeks to fit into Marilyn Monroe’s iconic dress for the Met Gala.
She told Vogue on the red carpet: "I tried [the dress] on and it didn't fit me. I said, 'Give me three weeks.'
"I had to lose 16 pounds down today. It was such a challenge. It was like a [movie] role. I was determined to fit [into] it. I haven't had carbs or sugar in about three weeks."
Speaking on the Today show, the star admitted she is “down 21 pounds now.”
If true, there are a number of health dangers the sisters could be putting themselves through as it is a surgery only for those who are originally overweight.